London -LRB- CNN -RRB- -- A former Guantanamo Bay detainee from Britain is among four people arrested on suspicion of Syria-related terrorism offenses , UK counterterror police said Tuesday .

Moazzam Begg , from Hall Green in Birmingham , is `` suspected of attending a terrorist training camp and facilitating terrorism overseas , '' a statement from West Midlands Police said .

The three other suspects -- a man , 36 , a woman , 44 , and her son , 20 , all from Birmingham -- were detained on suspicion of facilitating terrorism overseas , police said .

`` All four arrests are connected . They were preplanned and intelligence led . There was no immediate risk to public safety , '' said Det. Superintendent Shaun Edwards of West Midlands Police .

Officers are carrying out searches at properties connected to the suspects and vehicles and electronic equipment are being removed for forensic analysis , authorities said .

The suspects have not been charged with any offense .

Begg was arrested as a suspected al Qaeda member in Pakistan in February 2002 and was held at the U.S. airbase at Bagram , Afghanistan , before being sent to the U.S. prison camp at Guantanamo Bay , Cuba .

Begg spent nearly three years in custody . He was sent back to Britain by the Bush administration in early 2005 and was never prosecuted .

He co-authored a book about his experiences at Guantanamo Bay in 2006 and has appeared as a public speaker and commentator in Britain and overseas since his release .

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Police : Moazzam Begg is among four arrested on suspicion of Syria-related offenses

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Police : He 's suspected of attending a terrorist training camp , aiding overseas terrorism

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Begg spent nearly three years at Bagram airbase and the Guantanamo Bay prison camp

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He was released in 2005 and sent back to Britain